{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T18:11:21.395Z","years_from_j2000":26.67,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"toi-4010-e","name":"TOI-4010 e","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":578.9406167023282,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":20.2148196,"dec_deg":66.0722009,"epoch_ra_deg":20.672016,"epoch_dec_deg":66.213068,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-4010","semi_major_axis_km":234868656.99899998,"periapsis_km":null,"mass_kg":4.1327401645116346e+27,"mass_msun":0.00207841,"constellation":"Cassiopeia","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-4010-e","radius_km":84828.73000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-4010","host_v_mag":12.291,"eccentricity":0.26,"uncertainties":{"mass_kg":[3.7624657567085686e+26,3.94163079274231e+26],"distance_ly":[3.2028556291784205,3.2419943945044296],"eccentricity":[0.04,0.04],"host_mass_solar":[0.03,0.03],"host_radius_solar":[0.01,0.01],"host_temperature_k":[36,36],"semi_major_axis_km":[19447723.191,17951744.483999997],"orbital_period_days":[90,90],"argument_of_periastron_deg":[11,11]},"host_mass_solar":0.88,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.83,"planets_in_system":4,"discovery_facility":"Roque de los Muchachos Observatory","host_spectral_type":"K V","host_temperature_k":4960,"orbital_period_days":762,"transit_midpoint_bjd":2460218,"equilibrium_temperature_k":174,"argument_of_periastron_deg":138},"designations":[{"catalog":"Exoplanet","designation":"TOI-4010 e"}],"source":{"id":"exoplanet_archive","name":"NASA Exoplanet Archive (Planetary Systems Composite Parameters)","url":"https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars","license":"Public domain (NASA)"},"updated_at":"2026-09-01T22:58:55.274Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}